Greetings,

I am not sure I understand this completely.
Are you asking the remote box to perform the 'ping' command? (And what does it mean its output is constant?) If so are you sending a limited number of packets (-c, I think) or are you doing an open ended ping? In this last case, I have a feeling that Net::telnet->cmd will not return until the command is over (i.e. never).
Cheers,
alf

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You can't have everything: where would you put it?